A31L214KN

The A31L214KN is an ultra-low power 32-bit microcontroller from Abov’s A31L21x series, powered by an ARM Cortex-M0+ core running up to 32 MHz. It combines compact memory, a broad set of peripherals and hardware security primitives for embedded control in low-power, space-constrained applications.

Designed for IoT end nodes, smart metering, access control and portable consumer/medical devices, the device emphasizes energy efficiency, integrated connectivity and on-chip security to simplify system design and extend battery life.

Key Features

• Core ARM Cortex-M0+ 32-bit core running up to 32 MHz for deterministic control and efficient code execution.
• Memory 128 KB Flash program memory with 4 KB data flash and 20 KB SRAM; includes a 32-byte backup register for retention.
• Power and Low-Power Modes Operates from 1.71 V to 3.6 V. Ultra-low power operation with measured modes such as 90 μA/MHz in RUN, 0.99 μA DEEP SLEEP with RTCC and retention, and down to 45 nA SHUT DOWN (DEEP SLEEP mode 3). Fast wake-up (≈5 μs) from power modes.
• Analog and Timers 12-bit A/D converter (8 channels on the A31L214KN variant) and multiple timers (3 general-purpose timers on this package) for sensor interfacing and time-critical control.
• Connectivity Multiple serial interfaces including 2 × USART, 1 × UART, 2 × LPUART, 3 × I2C, 1 × SPI and a Smart Card interface, providing flexible options for peripheral and network connectivity.
• Security and System Reliability AES-128 hardware encryption, True Random Number Generator (TRNG), CRC unit (8/16/32-bit), POR, LVR and LVI for reliable system operation.
• DMA and Peripherals Seven-channel DMA, Watchdog Timer, Real Time Clock and Calendar (RTCC), internal RC oscillator and SWD debug interface to speed development and offload the CPU.
• Display & I/O Integrated LCD driver/controller capability in the A31L21x family and 28 general-purpose I/O pins on the 32-LQFP package for user interfaces and system control.
• Operating Range & Package Industrial operating temperature range from −40 °C to +105 °C and supplied in a 32-LQFP surface-mount package suitable for compact board designs.

Typical Applications

• Smart Meters — Precision A/D conversion and low-power modes enable long-term metering and periodic data logging with secure communication.
• Smart Card Readers & Secure Access — Smart Card interface, AES-128 and TRNG provide the cryptographic primitives and interface support required for secure transactions and access control.
• IoT Sensor Nodes — Ultra-low sleep current, flexible serial buses (I2C/SPI/USART) and real-time clock support battery-operated wireless sensor networks and remote monitoring.
• Home & Building Control — Multi-interface connectivity, timers and I/O count support control of actuators, sensor aggregation and user interfaces in automation systems.
• Portable Healthcare & Consumer Devices — Compact package, low-power operation and integrated peripherals reduce BOM and simplify portable design.

Unique Advantages

• Highly integrated memory mix: 128 KB Flash plus 4 KB data flash and 20 KB SRAM reduce external memory requirements and simplify firmware updates and data logging.
• Low-power operation with fast wake: Multiple low-power modes (including DEEP SLEEP with RTCC and sub-μA shutdown) and ~5 μs wake-up time enable energy-efficient always-on and intermittently active systems.
• Comprehensive connectivity: Multiple USART/UART/LPUART/I2C/SPI ports and a Smart Card interface provide flexible peripheral and network expansion without external bridges.
• Built-in hardware security: AES-128 engine and true RNG deliver on-chip cryptographic building blocks for secure communications and device authentication.
• Peripherals to offload the CPU: Seven DMA channels, CRC units, RTCC and hardware timers reduce CPU overhead and improve real-time responsiveness.
• Industrial temperature and compact package: −40 °C to +105 °C rating and a 32-LQFP surface-mount package enable deployment in space-constrained, temperature-variable environments.

Why Choose A31L214KN?

The A31L214KN delivers a balanced combination of processing, memory and peripheral integration tailored for low-power embedded applications. As a member of Abov’s A31L21x family, it provides a consistent feature set across multiple package and memory options, allowing designers to scale within the same architecture while minimizing platform changes.

With on-chip AES-128, TRNG, multiple serial interfaces, seven-channel DMA and low-power operation down to single-digit nanoamp shutdown, the A31L214KN helps reduce BOM, simplify firmware design and extend battery life for IoT, metering, access control and portable devices. Comprehensive documentation and datasheet support are available from the manufacturer to accelerate development.

For pricing, availability and to request a formal quote for the A31L214KN, please submit a quote request or contact Abov’s sales channels for assistance.